Lazard kahn



L. KAHN. GAS STOVE.

(No Model.)

Patented Aug. 13, 1895.

w r u r itnesses S w, Attorney LAZARD KAHN, OF HAMILTON, OHIO, ASSIGNORTO F. a L. KAHN & BROS.

PATENT OFFICE.

or SAME PLA E.

oAs-s'rovs.

SIEGIFIG'A'IION forming part of Letters Patent No. 544,307, dated August13, 1895.

7 Application filed October 29, 1894- Serial No. 527,130. (No model.)

Stoves, of which the following is a specification.

This invention pertains to gas-stoves in tended for heating purposes,and the improvements will be readily understood from'the followingdescription, taken in connection with the accompanying drawings, inwhich Figure 1 is a front elevation of a stove exemplifying myimprovements; Fig. 2,a front elevation of the same with the upperportion tipped backward; Fig. 3, a side elevation of the stove with theupper portion tipped backward; Fig. 4. a vertical transverse section(plane of line a) of the stove in its upright position; Fig. 5, avertical transverse section of the base portion of the stove (plane ofline b) on an enlarged scale; Fig. 6, a plan of the base with the upperstructure removed; Fig. 7, an end view of the base, showing left-handend of Fig. 6; and Fig. 8, an enlarged section of a portion of one ofthe tubes.

In the drawings, 1 indicates the base of the stove, having the form of along skeleton pan with open top and closed bottom and large openings inits sides and ends; 2, an outwardly and downwardly projecting flange atthe top of this base structure; 3, feet formed at the corners of thisflange and supporting the pan-like structure 1 some distance above thefloor; 4, perforated metal lining the sides and ends of the panstructure 1; 5, a burnerpipe disposed centrally and lengthwise of thepan structure at its top, and provided along its length with a series ofupwardly-projectin g burner-nipples; 6, a tube-base resting upon andclosing the top of the pan structure; 7, hinges uniting the rear edge ofthis tubebase with the rear upper portion of the pan structure, thesehinges being formed by lugs cast upon the tube-base and projecting downthrough mortises cast in rear flange 2, the tube-base being thereforecapable of opening upwardly at its front; 8, a stop to limit the openingmotion of the tube-base upon its hinges; 9, a gravity-latch pivoted tothe tubebase and extending forward and downward and hooking under thefront of flange 2, so as to prevent'the opening of the tube-base; 10, aseries of metallic tubes rising from openings in the tube-base; 11, atop piece uniting and closing the tops of the tubes, and rigidly unitedto the tubes, the tube-base, the tubes, and the top piece being unitedinto one rigid structure hinged 'to the base of the stove; 12, thegas-supply cock upon one end of burnerpipe 5; 13, the burner-nipplesprojecting up from burner-pipe ,5 above the level of the top of the basestructure; 14, upwardly-projecting portions of the base-piece over theeyes at the ends thereof which support the burnerpipe 5, the burner-pipebeing passed endwise through these eyes, and the parts 14 projectingupwardly above the surface of the base, so as to be engaged by notchesin the ends of the tube-base 6 when the tubes are vertical; 15, anupwardly-open notch or gap in one of the eyes 14 of a width exceedingthe thickness of burner-nipples 13; '16, a cap upon one end of theburner-pipe, closing that end of the burner-pipe, this cap having anon-circular exterior engaging a non-circular seat in the basestructure, as seen in Fig. 7; 17, the noncircnlar seat just referred to,the construction being such that in assembling the parts before cook 12is applied the burner-pipe may be pushed endwise into the eyes from theleft, and when cook 12 is applied the burner-pipe is held end wise, andnon-circular cap 16 prevents its rotary displacement; 18,escutcheonplates riveted to the faces of the tubes and having micaopenings; 19, openings in the tubes registering with these mica openingsin the escutcheons; 20, plates screwed against the outside of thees'cutcheon-plates and having corresponding mica openings; and 21 micasheets clamped between the escutcheonplates and plates 20, the micasbeing thus supported outwardly a distance from the bore of the tubes,and being renewable without the necessity for access to the interior ofthe tubes.

Latch 9 has trunnions cast at each side of its inner end, thesetrunuions lying in upward ly-open notches in the tube-base, the latchbeing disposed between two of the tubes. When the tubes are in placeupon the tubebase the lower ends of the two tubes in question close thetops of the notchesreferred to and prevent the displacement of thelatchpivots. When the tubes stand vertically the latch is engaged at itsforward end, and the tube structure is held squarely and firmly upon thebase structure. By pulling the forward end of the latch outwardly it isdisengaged from the flange of the base, and then the tube structure maybe tipped backward as far as stop 8 will permit. By tipping the tubestructure forward again to its vertical position the latch will beautomatically re-engaged.

The burner-pipe presents a burner under the open lower end of each tube,the tube structure completely covering the burner structure when thetubes stand vertically. Under these conditions the heat from thegasfiames and the hot products of combustion rise in the tubes andescape at openings provided at their tops, the stove heating byradiation from its surfaces and by the escape of hot products from thetop openings of the tubes, the air for ignition going to the burn- 'ersthrough the perforated metal 4, which it may reach from all sides of thestove, a free space being formed between the floor and the bottom of thepan structure.

Stop 8 is so disposed that when the tube structure is tipped back to itslimitof motion the center of gravity of the entire structure is stillwell within the leg-base of the stove. The tubes may confidently bethrown back without fear of the overturning of the structure. \Vhen thetubes are tipped back, the burner-flames are exposed to view at thefront opening of the stove, but theyare still underneath the tubes.Under these conditions the tubes will be heated, as before described,but radiated heat and also cheerfulness will be gotten from the exposedgas-flames. The tipping back of the flue structure also permits of theeasy lighting of the burners, and permits of the ready inspection of theburners if they are turned very low and there is a suspicion of theirhaving become extinguished. Again, when the flue structure is tippedback and the gas turned on for lighting, that gas which escapes beforelighting takes place will escape into the tubes, and if the lighting isdone with fair promptness will become later burned therein, thusavoiding the escape of unburned gas into the room in the act of lightingthe stove.

I claim as my invention- 1. In a gas stove, the combination,substantially as set forth, of a base structure having eyes for a burnerpipe and having one of said eyes gapped in its upper portion, a burnerpipe provided with upwardly projecting nipples and engaging said eyes, acock upon one end and a cap upon the other end. of said burner pipe, andabutting inwardly against said base structure and a tube-structuresecured to the base over said burner pipe.

2. In a gas stove, the combination, substantially as set forth, of abasestructure having eyes for aburner pipe and a noncircular seat, a burnerpipe supported in said eyes, a noncircular cap on said pipe engagingsaid seat, a cock upon the other end of the burner pipe, and a tubestructure secured to said base above said burner pipe.

LAZARD KAI-1N. \Vituesses:

J. W. SEE, M. S. BELDEN.

